Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/170565 |
Resumo: | We study, using Density Functional theory (DFT) and Monte Carlo simulations, aqueous electrolyte solutions between charged infinite planar surfaces, in contact with a bulk salt reservoir. In agreement with recent experimental observations [Z. Luo et al., Nat. Commun. 6, 6358 (2015)], we find that the confined electrolyte lacks local charge neutrality. We show that a DFT based on a bulk-HNC expansion properly accounts for strong electrostatic correlations and allows us to accurately calculate the ionic density profiles between the charged surfaces, even for electrolytes containing trivalent counterions. The DFT allows us to explore the degree of local charge neutrality violation, as a function of plate separation and bulk electrolyte concentration, and to accurately calculate the interaction force between the charged surfaces. |
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Colla, Thiago EscobarGirotto, MatheusSantos, Alexandre Pereira dosLevin, Yan2017-11-24T02:27:28Z20160021-9606http://hdl.handle.net/10183/170565001048249We study, using Density Functional theory (DFT) and Monte Carlo simulations, aqueous electrolyte solutions between charged infinite planar surfaces, in contact with a bulk salt reservoir. In agreement with recent experimental observations [Z. Luo et al., Nat. Commun. 6, 6358 (2015)], we find that the confined electrolyte lacks local charge neutrality. We show that a DFT based on a bulk-HNC expansion properly accounts for strong electrostatic correlations and allows us to accurately calculate the ionic density profiles between the charged surfaces, even for electrolytes containing trivalent counterions. The DFT allows us to explore the degree of local charge neutrality violation, as a function of plate separation and bulk electrolyte concentration, and to accurately calculate the interaction force between the charged surfaces.application/pdfengThe journal of chemical physics. New York. Vol. 145, no. 9 (Sept. 2016), 094704, 15 p.EletrólitosMétodo de Monte CarloTeoria do funcional de densidadeCharge neutrality breakdown in confined aqueous electrolytes : theory and simulationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001048249.pdf001048249.pdfTexto completo (inglês)application/pdf2451345http://www.lume.ufrgs.br/bitstream/10183/170565/1/001048249.pdff675c9a33f145033949c3775ed83ae31MD51TEXT001048249.pdf.txt001048249.pdf.txtExtracted Texttext/plain79354http://www.lume.ufrgs.br/bitstream/10183/170565/2/001048249.pdf.txt07fde90573ef7737599d30819d054253MD5210183/1705652023-06-08 03:34:02.067057oai:www.lume.ufrgs.br:10183/170565Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-06-08T06:34:02Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
title |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
spellingShingle |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation Colla, Thiago Escobar Eletrólitos Método de Monte Carlo Teoria do funcional de densidade |
title_short |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
title_full |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
title_fullStr |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
title_full_unstemmed |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
title_sort |
Charge neutrality breakdown in confined aqueous electrolytes : theory and simulation |
author |
Colla, Thiago Escobar |
author_facet |
Colla, Thiago Escobar Girotto, Matheus Santos, Alexandre Pereira dos Levin, Yan |
author_role |
author |
author2 |
Girotto, Matheus Santos, Alexandre Pereira dos Levin, Yan |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Colla, Thiago Escobar Girotto, Matheus Santos, Alexandre Pereira dos Levin, Yan |
dc.subject.por.fl_str_mv |
Eletrólitos Método de Monte Carlo Teoria do funcional de densidade |
topic |
Eletrólitos Método de Monte Carlo Teoria do funcional de densidade |
description |
We study, using Density Functional theory (DFT) and Monte Carlo simulations, aqueous electrolyte solutions between charged infinite planar surfaces, in contact with a bulk salt reservoir. In agreement with recent experimental observations [Z. Luo et al., Nat. Commun. 6, 6358 (2015)], we find that the confined electrolyte lacks local charge neutrality. We show that a DFT based on a bulk-HNC expansion properly accounts for strong electrostatic correlations and allows us to accurately calculate the ionic density profiles between the charged surfaces, even for electrolytes containing trivalent counterions. The DFT allows us to explore the degree of local charge neutrality violation, as a function of plate separation and bulk electrolyte concentration, and to accurately calculate the interaction force between the charged surfaces. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016 |
dc.date.accessioned.fl_str_mv |
2017-11-24T02:27:28Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/170565 |
dc.identifier.issn.pt_BR.fl_str_mv |
0021-9606 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001048249 |
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0021-9606 001048249 |
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http://hdl.handle.net/10183/170565 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The journal of chemical physics. New York. Vol. 145, no. 9 (Sept. 2016), 094704, 15 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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